Magnetic Behaviour of Perovskite Compositions Derived from BiFeO<sub>3</sub>

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Magnetic Behaviour of Perovskite Compositions Derived from BiFeO<sub>3</sub>

The phase content and sequence, the crystal structure, and the magnetic properties of perovskite solid solutions of the (1−<i>y</i>)BiFeO<sub>3</sub>–<i>y</i>BiZn<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub> series (0.05 ≤ <i&g...

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Detalles Bibliográficos
Autores principales:	Andrei N. Salak, João Pedro V. Cardoso, Joaquim M. Vieira, Vladimir V. Shvartsman, Dmitry D. Khalyavin, Elena L. Fertman, Alexey V. Fedorchenko, Anatoli V. Pushkarev, Yury V. Radyush, Nikolai M. Olekhnovich, Róbert Tarasenko, Alexander Feher, Erik Čižmár
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	atomic substitution Néel temperature G-type antiferromagnetic weak ferromagnetism collinear magnetic ground state Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/865ad8d936d14b6296b319ebb21aa803
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

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Sumario:	The phase content and sequence, the crystal structure, and the magnetic properties of perovskite solid solutions of the (1−<i>y</i>)BiFeO<sub>3</sub>–<i>y</i>BiZn<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub> series (0.05 ≤ <i>y</i> ≤ 0.90) synthesized under high pressure have been studied. Two perovskite phases, namely the rhombohedral <i>R</i>3<i>c</i> and the tetragonal <i>P</i>4<i>mm,</i> which correspond to the structural types of the end members, BiFeO<sub>3</sub> and BiZn<sub>0.5</sub>Ti<sub>0.5</sub>O<sub>3</sub>, respectively, were revealed in the as-synthesized samples. The rhombohedral and the tetragonal phases were found to coexist in the compositional range of 0.30 ≤ <i>y</i> ≤ 0.90. Magnetic properties of the BiFe<sub>1−<i>y</i></sub>[Zn<sub>0.5</sub>Ti<sub>0.5</sub>]<i><sub>y</sub></i>O<sub>3</sub> ceramics with <i>y</i> < 0.30 were measured as a function of temperature. The obtained compositional variations of the normalized unit-cell volume and the Néel temperature of the BiFe<sub>1−<i>y</i></sub>[Zn<sub>0.5</sub>Ti<sub>0.5</sub>]<i><sub>y</sub></i>O<sub>3</sub> perovskites in the range of their rhombohedral phase were compared with the respective dependences for the BiFe<sub>1−<i>y</i></sub><i>B</i><sup>3+</sup><i><sub>y</sub></i>O<sub>3</sub> perovskites (where <i>B</i><sup>3+</sup> = Ga, Co, Mn, Cr, and Sc). The role of the high-pressure synthesis in the formation of the antiferromagnetic states different from the modulated cycloidal one characteristic of the parent BiFeO<sub>3</sub> is discussed.